Publication 1756-UM001G-EN-P - January 2007
68
Develop Applications
DevelopPrograms
The controller operating system is a preemptive multitasking system
that is IEC 1131-3 compliant. This environment provides:
•
tasks to configure controller execution.
•
programs to group data and logic.
•
routines to encapsulate executable code written in a single
programming language.
Program Development Overview
Control Application
Controller Fault Handler
Task 8
Task 1
Configuration
Status
Watchdog
Program 32
Program 1
Main Routine
Fault Routine
Program (local)
Tags
Other Routines
Controller (global) Tags
I/O Data
System-shared Data
Summary of Contents for controllogix 1756-L55M12
Page 4: ...Publication 1756 UM001G EN P January 2007 Summary of Changes 4 Notes...
Page 10: ...Publication 1756 UM001G EN P January 2007 10 Notes...
Page 66: ...Publication 1756 UM001G EN P January 2007 66 Place Configure and Monitor I O Modules Notes...
Page 82: ...Publication 1756 UM001G EN P January 2007 82 Develop Applications Notes...
Page 122: ...Publication 1756 UM001G EN P January 2007 122 Maintain Nonvolatile Memory Notes...
Page 130: ...Publication 1756 UM001G EN P January 2007 130 Maintain the Battery Notes...
Page 134: ...Publication 1756 UM001G EN P January 2007 134 LED Indicators Notes...